but in the code from the original post, you did not have the Populate List From array behavior applied to the onchange event of parent select list.
you had it applied to the onmouse over event of a p tag.
I told you to remove it from the p tag and add it to the onchange event of the parent select list.
If this is not working, then I need to see the Current state of the code. the original file doesn't do any good since it does not accurately reflect the code that is running in the page now....
compress the current version of the file to a zip archive please....